Means of attaching work-supports of sewing-machines.



D. S. SEYMOUR.

MEANS OF ATTAGHING WORK SUPPORTS 0F SEWING MACHINES.

I APPLICATION FILED OCT. 16, 1911.

1,1 10,237. x Patented Sept. 8, 1914.

DUDLEY S. SEYMOUR, QF OAK PARK, ILLINOIS, ASSIGNOR T0 UNION SPECIA]: MACHINE CGMPANY, OF CHICAGO, ILLINOIS, A CORPORATIQN OF ILLINOIS.

MEANS OF ATTACHING WORK-SUPPORTS 01* SEWING-MACHINES.

iaiaaar.

Specification of Letters Ratent.

Patented dept. d, 1914,

Application filed October 16, 1911. Serial Ho. 65 L839.

Illinois, have invented certain'new and useful Improvements in Means of Attaching Work-Supports of Sewing-Machines, of whichthe following is a description, reference being bad to the accompanying drawing and to the letters and figures of reference marked thereon. I

My invention relates to an improvement which has been especially devised for use in attaching the work support or cylinder of a sewing machine to the standard thereof. The rear end of this work support on machines of this character, is ordinarily a flat plate having its surface milled and having screw holes for its attachment to the standard. The standard and work support new ally contain shafts which for proper working must be in exact alinement, and it is. extremely diificult to accomplish such alinementwith the two flat engaging surfaces. Furthermore,-as the parts within the work support must be kept thoroughly oiled, the oil is likely to leak out between the two contacting faces. I have provided means for preventing such leakage. I

A sewing machine of the type tov which my invention is applied, is illustrated in Patent No. 583,415, hot it will be understood that so far as any broad principle is concerned, T do not wish to be limited to sewing machine construction.

My invention. therefore, consists in the matters hereinafter described and referred to in the appended claims. v

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation partly in section, of a portion of a sewing machine illustrating an embodimrntof my invention; Fig. 2 is an enlarged side section of Fig. 1; Fig. 3 is a perspective view of the end ofthe work support; and Fig. i is a detail view of one of the adjustable bushings.

In these drawings, the standard 1 and the work support or cylindrical casing 2 and the mechanism inclosed within them, are substantially as shown in the patent above referred to. The standard has a flat milled surface with screw holes 3 therein. The casing or work support has a fiat rear face 4: with countersunk openings to receive the heads of the screws 5. It has a journal for the looper shaft 7. Also mounted in the-standard is the main cross shaft which operates the feed and vibrates the looper shaft. This main shaft carries the usual eccentric which oscillates the looper shaft 7 about its longitudinal axis. The looper shaft is moved lengthwise in its bearings, through.

a. rock shaft, also mounted in the standard and oscillated from an eccentric connection to the main shaft. This mechanism for o cillating and moving the looper shaft erally is well. known in the art, and further detailed description thereof is not thought necessary.

As hereto-fore constructed-the casing been secured to the staiidard by means'of the screws above referred to. By this arrangementof the two flat milled surfaces resting against each other screws, if for any reason it is necessary to disconnect the casing from the standard, is most dificult to aline the shafts in again securing the casing to the standard, as in deed, such is very difiicult to do in the mam.- fact-ure of the -machine. By my arrange ment, the adjustment of the casing on the standard is rendered more easily accomplished, and accurate shaft alineinent secured, and, furthermore, when-the adjust ment is once effected, the separation of the casing from the standard does not require new adjustment when the casing is re-a-ttache'd hy the screws, which is the case when screws are both the securing means and the adjusting-means.

This improved device invented hy me con sists in providing ad'gustable hushings 8,

- ScreW threaded into the casing, bearing their inner ends on the flat face of the stand ard and through which, the screws 5 pass. These bushings are adjusted by nfeansof sores"; driver engaging the nicks 9, and their outer edges are below the countersinks 'whichthe screw heads fit, so that the screw heads do not bear on the bushings but on the casting itself.

It will he seen by this construction that any inequality in the contacting flat faces of the cases and standard, or any other defeet, will he compensated for by slight turn ing of one or another of the bushings.

I do not wish to be limited tothis invention as applied merely to the attachment a sewing machine work support and secured by the four to stand- Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is i l. The combination with a standard, of a frame or casing carried thereby and projecting laterally therefrom, a plurality of devices carried by one of the parts and bearing against the angular position of the longitudinal axis of the projecting part relative to the stand ard, and means for fixedly securing said casing or frame 'to said standard in its various adjusted positions.

2: The combination with a standard, of aworksupport carried thereby and projecting laterally therefrom, both. said work support and standard having operating shafts mounted therein, a plurality of devices spaced around said said devices being adapted to bear against the standard for adjusting the angular position of the work support with respect to the standard whereby said shafts are placed in proper ootiperative relation to each other, and means for fixedly securing the work support to the standard in its various adjusted positions.

3,. The combination of a standard, a work support carried'thereby and projecting lat-= erally therefrom, both said work support and standard having cotiperating shafts mounted therein, means for fixedly securing portion 12 of the casing.

other for adjusting the.

1 frame, said'member having shaft in the work support, and at a distance therefrom, each of work support secured an oil-deflecting plate the work support to plurality of adjustable devices carried by one of said parts and bearing against the other, whereby the angle of the work support relative to the standard may be varied:

4. In combination with a standard and a work support, both containing shafts adapted to 'coiiperate with each other, adjustable bushings carried by one of said parts and bearing against the other to alter the position of said parts, and screws or similar devices passing from the work support into said standard through said bushings, for fixedly holding. said work support on the standard. I Y

5. In combination with a standard and work support to be secured together, said work support havin internally screwthreaded openings, bus ings screwed therein with their outer. faces within the plane of the outer end of said openings, screws passing through said bushings into the standard, the heads being out of contact with the bushings.

6. 'In combination with a standard, a work sup ort secured thereto, said Work support opening into the standard, and an apron on said. work support projecting into said standard.

7. In a sewing machine, a main frame or standard, a member supported by said main an oil-deflecting portion projecting into the main frame or standard, and means for securing said member to the main frame or standard. 8. In combination'with the standard, a thereto, said work support having an enlarged inner end, the wall of which is inclined downwardly, and or apron extending from said well into the standard.

In testimony whereof I afiix my signature, in presence 'of two witnesses.

. DUDLEY S. SEYMQUR.

Witnesses:

G. L. STURTEVANT', O. MoNnm.

said, standard, and a. 

